Island



(No Model.)

G. O. GAMMON. ELECTRIC GUT-OUT.

No. 447.676. Patented Mar. 3,1891.

lY/TNEJSES INVENTOR UNITED STATES PATENT OEEIcE.

GEORGE C. GAMMON, OF Pr "UCKET, tHODE ISLAND.

ELECTRIC CUT-OUT.

SPECIFICATION forming part of Letters Patent No. 447,676, dated March 3, 1891. Application filed July 2. 1889. Serial No. 816,836. (No model.)

To aZZ whom, it may concern:

Be it known that I, GEORGE C. GAMMON, a citizen of the UnitedSt-ates, residing at Pawtucket, in the State of Rhode Island, have invented certain Improvements in Electrical Cut-Offs, of which the following is a specification.

My invention relates to mechanism whereby an electric circuit is broken after a prearranged period of time when the same becomes grounded or otherwise closed, thereby preventing the battery from becoming exhausted.

In the accompanying drawing, L L represent the wires connected with the two opposite poles of the battery. Between Ii L I place the following mechanism:

A is an electric magnet.

B is the armature of the magnet, pivoted at I and having a slight free motion between the core of the magnet and. a stop N. The armature 13 has an arm Q,to which is pivoted at It a rod 0, the other end of C being pivoted to a metallic movable weight D at S, or B may be directly connected with D through arm Q being pivoted to D.

I is a fan.

II II H II" is a system of gear-wheels for transmittingmotion to the fan I. These gearwheels can be of course connected by any convenient frame.

D is pivoted to the shaft upon which 11 re volves. II has ratchets G at or near its periphery and concentric therewith. D is provided with a hinged pawl F, which engages with the ratchets G of H, and is held so engaged either by gravity or a spring. Upon a surface S (preferably of a curved form) of the metallic weight D is a slot or cut E, in which is placed a piece of vulcanized rubber or other non-con ducting material.

J is a conductor pressing against the surface T, either by spring or otherwise.

The eleetricitypasses from L through wire K to and through the helix of the magnet A, from thence over conductor If to D, from D to J, and from J to L The upward motion of D is produced bythe red C and the downward motion by gravity. The motion of red C is actuated upward by the arm Q of the armature B and downward by gravity, and the extent of the motion of D downward is regulated by the position of the stop N.

The mechanism is at rest with an open circuit, in which circuit is a break, the closing of which causes an electric bell to ring or other mechanism to work, such as indicators, the.

The operation of the mechanism is as fol lows: The circuit being open, the electromagnet A is devitalized, and the arm B rests on stop N. lVhen the circuitis closed either by the break in K being purposely closed or by one of the wires being grounded, A becomes vitalized and attracts the armature B to its core, and thereby lifts the arm Q, which through R lifts rod 0, which through S lifts D, thereby causing the pawl F through the ratehets G to revolve the gear-wheel H, which through 11 H "II" communicates motion to fan I. The resistance of the fan can be made greater or less by increasing or diminishing its length. The resistance of the tan operates through the gearing, and through D, C, and Q to retard the action of the electro-magnet A upon the armature I and thereby regulate the time in which the magnet A will draw to its core the said armature. When the magnet A becomes vitalized the conductor J rests upon the metallic portion of D, and the in sulated slot E is so placed that J will impinge upon said insulation at or before the time when B reaches the core of the magnet A or any stop to prevent its actually touching such core. \Vhen J impinges upon the insulation E, the circuit is broken and the action of the battery ceases, and J, by falling into the insulated slot E, engages with the upper or other portion of the slot and holds the mechanism in the position it was in when the circuit was broken.

Of course the mechanism can be connected with a number of open circuits, such as are formed when wiring a house for electric bells, and the earth may or may not form part of the circuit. M is a rod traveling in suitable guides, which when pressed upward releases the spring J from the insulated slot E, and D, with its counecting-arms O Q, drops till stopped by N.

hat I claim as new, and desire to secure by Letters Patent, is-- 1. In a cut-out, the combination of the fan I, a train of gear-wheels H H 850., connected therewith, a movable piece D, having the pawl actuating said gear-train, said movable piece being provided with an insulating-stop and spring-contact J adapted to slide upon said movable piece, an electro-magnet A, and an armature for said electro-magn'ct, connected with the movable piece D, substantially as described.

2. In a cut-out, the combination of the fan I, a train of gear-wheels H H 860., connected therewith, a movable piece D, having the pawl actuating said gear-train,said movable piece being provided with an insulating-stop and spring-contact J, adapted to slide upon said movable piece, an electro-magnet A, and an armature for said electro-magnet connected with the movable piece D, and a releasingl'od M for forcingJ out of the insulating-stop Witnesses:

j JAMES L. J ENKS,

N. BYRON DENISON. 

